Each year, monarch butterflies undertake a multi-generational migration from Mexico to Canada and back again.
With the arrival of spring, animals converge on the Falkland Islands.
On Africa's Serengeti Plain, one million wildebeests pause for the female wildebeests to have their young in a massive birthing event.
Animals that turn away from the good life and face difficulties always have their reasons.
The Christmas Island red crab is a land-bound crab that still has strong ties to the ocean, the only place where they can give birth to their young.
Attracting a mate and breeding resembles a blood sport for many wild animals.
Salvatore Vecchio
Narrator
Christine Weber
Producer
James Manfull
Writer